Metallic packing ring for slip-joint pipe connections



Plll 7, 1931- A. c. FuzcKER METALLIC PACKING RING FOR SLIP JOINT PIPECONNECTIONS Filed July 26, 1927 distortion in shipment and in handling..

Patented Apr. 7, 1931 yUNITEDl STATES PATENT OFFICE ADCLIE C. nECxEE, orOAKVILLE, CONNECTICUT, AssIGNoE To CHASE COMPANIES,v INC., oE WATEEEUEY,CONNECTICUT, A CoEPoEATIoN i METALLIC PACKING RING FORSLIP-JOINT PIPECONNECTIONS Application filed July 26, 1927. Serial No. 208,462.

This invention relates to an improvement in packing-rings andparticularly to packingrings for slip-joint pipe connections.

Heretofore, in slip-joint pipe connections,

6 it has` generally been the custom to employ packing-rings composed oflead or other soft metal which, however, while capable of producing atight joint, if uninjured, are inherently weak and susceptible tobending r:Illld e results to be expected from the use of such soft metalpacking-rings are, therefore, more or less uncertain, as any distortionis ex'- tremely difficult t0' correct without the use of special tools.Non-metallic packing-rings formed of such materials as rubber or leatherare, of course, not as long-lived as those made of metal and, for thatreason, are not to be compared with the latter.

The object of this invention is toproduce, ata low cost for manufacture,a packing-ring capable of producing a leak-proof joint and which, at thesame time, possesses suflicient strength and rigidity to effectivelyresist.

bending and distortion in shipment and handling.l l

With this object in view, my invention consists in a packing-ring forslip-joint pipe con.

nections characterized by being substantially concave-convex incross-section, whereby it may yield toen dwise pressure.' In theaccompanying drawings: Fig. 1 is a view partly in elevation and partlyin longitudinal section o f a pipe and fitting, together with aslip-'oint provided with one of my improved pac ing-rings, thepacking-ring being compressed in place;

Fig..2 is a correspon-ding view with the parts separated prior toassembly;

Fig. 3 is a longitudinal sectional lview showing the parts in thepositions due to them just prior to the compression of my improvedpacking-ring;

Fig. 4 is a top or plan view of my improved packing-ring; and Fig. 5 isa view thereof mainly in side elevation and partly in section.

In carrying out my invention as herein shown, I form a packingsring 1()of soft brass o rother suitable metal and-provide the same at one endwith a sloping annular face 11 and at its opposite end with a slightlyrounded face 12, as clearly shown in Fig. 5. About midway between itsopposite ends I form the said ring with an internal annular groove 13,

the purpose of which will hereinafter appear,

and which results in the formation of an inwardly-extending bearing-ange14 at the lower end of the said ring and a substantially correspondingcomplementary bearing-flange 15 at its upper end.

In the use of my improved packing-ring, it is slipped over a pipe 16 forthe purpose of connecting the latter to a fitting 17. The fitting justmentioned is, as shown, formed at its lower end with external threads 18for co-action lwith the internal threads of a binding-nut 19 which hasbeen previously` placed upon the pipe 16 before the end of the saidpipehas been inserted into the fitting 17 as shown in Fig. 2.The'binding-nut 19 is next screwed upon the end of the fitting, so as tolightly grip the packing-ring 10 between an inwardly-turned flange 20formed upon the said binding-nut, and the inwardlysloping rounded end 21of the fitting 17 aforesaid; the parts now being in the positions shownin Fig. 3.

After the pipe 16 has been adjusted longii tudinally within the fitting17 to the desired degree, the binding-nut 19 is screwed further onto theend of the fitting with the effeet of compressing the packing-ringendwise between the parts 20 and 21 and.l at the same time, causing itsflanges V14 and 15 to yield inwardly against the exterior of the pipe 16and its central portion to yield outward, as shown in Fig. 1. rThiscompression of the ring 10, as just described, is permitted andfacilitated by its internal groove 13, which as shown is of greaterdiameter than the internal diameter of the fitting 17 and the flange 20,and causes the flange 15, and, to a somewhat lesser degree, the flange14, to firmly grip the exterior of the pipe 16 and elfectuallypreventthe leakage of fluid between the `said pipe and fitting.

I claim:

'sion-surface' a 'narrow annular internal bearing-sur ace at the sameend of the ring as the said. tapered compression-surface and extendingsubstantially parallel with the axis of the ring; and an internalannularfgroove of a depth equal to substantially half the total radial`thickness of the ring and having one end closely approaching the said taered compression-surface to create a wea ened annular bending-zone andits opposite end sufficiently removed from the other end of the ring topreserve the same unweakened; whereby when endwise pressure is appliedto the ring, the same will bow outward at the said bending-zone andpermit the said annular bearing-surface to remain substantially parallelwith a tube upon whiqh it is applied. u

In testimony whereof, I have signed this specilication.

ADOLPH C. BECKER;

